‘The Russo-Ukrainian War’ is the comprehensive history of a conflict that has burned since 2014, and that, with Russia’s attempt to seize Kyiv, exploded a geo-political order that had been cemented since the end of the Cold War. With an eye for the gripping detail on the ground, both in the halls of power and down in the trenches, as well as a keen sense of the grander sweep of history, Serhii Plokhy traces the origins and the evolution of the conflict, from the collapse of the Russian empire to the rise and fall of the USSR and on to the development in Ukraine of a democratic politics. Based on decades of research and his unique insight into the region, he argues that Ukraine’s defiance of Russia, and the West’s demonstration of unity and strength, has presented a profound challenge to Putin’s Great Power ambition, and further polarised the world along a new axis.